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采用溶胶凝胶浸渍法,制备了ZrO2-TiO2的复合半导体光催化剂TZ500-1.0,采用SEM和XRD对TZ500-1.0进行表征。以三氯生(TCS)为目标污染物,选取TCS初始质量浓度、TZ500-1.0投加量、pH和温度4个主要试验因素,用正交试验考察了TZ500-1.0的光催化性能。结果表明,TZ500-1.0的光催化活性很高,并得出了降解TCS的最优试验条件:TCS初始质量浓度35 mg/L,TZ500-1.0投加量0.1 mg/L,pH为11,温度为45℃,最高去除率为92.11%。其中,催化剂投加量是首要影响因素。
The ZrO2-TiO2 composite semiconductor photocatalyst TZ500-1.0 was prepared by sol-gel impregnation method. The TZ500-1.0 was characterized by SEM and XRD. Taking triclosan (TCS) as the target pollutant, four main experimental factors, initial concentration of TCS, dosage of TZ500-1.0, pH and temperature, were selected to study the photocatalytic activity of TZ500-1.0 by orthogonal test. The results showed that the optimum photocatalytic activity of TZ500-1.0 was obtained and the optimum conditions for the degradation of TCS were obtained: TCS initial concentration 35 mg / L, TZ500-1.0 dosage 0.1 mg / L, pH 11, temperature 45 ℃, the highest removal rate was 92.11%. Among them, the catalyst dosage is the primary influencing factor.